package com.lxh.miniapp.controller;

import cn.binarywang.wx.miniapp.api.WxMaService;
import cn.binarywang.wx.miniapp.api.impl.WxMaServiceImpl;
import cn.binarywang.wx.miniapp.bean.WxMaMessage;
import cn.binarywang.wx.miniapp.constant.WxMaConstants;
import cn.binarywang.wx.miniapp.message.WxMaMessageRouter;
import com.lxh.miniapp.utils.MiniAppUtils;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.bind.annotation.*;

import java.util.Objects;

/**
 * created by lanxinghua@2dfire.com on 2020/2/21
 * 门户网站
 */
@Slf4j
@RestController
@RequestMapping("/wx/portal/{appid}")
public class WxPortalController {
    private static final Logger logger = LoggerFactory.getLogger(WxPortalController.class);
    private WxMaService wxMaService;

    @GetMapping(produces = "text/plain;charset=utf-8")
    public String authGet(@PathVariable String appid,
                          @RequestParam(name = "signature", required = false) String signature,
                          @RequestParam(name = "timestamp", required = false) String timestamp,
                          @RequestParam(name = "nonce", required = false) String nonce,
                          @RequestParam(name = "echostr", required = false) String echostr) {
        log.info("\n接收到来自微信服务器的认证消息：[{}, {}, {}, {}]", signature, timestamp, nonce, echostr);
        if (StringUtils.isAnyBlank(signature, timestamp, nonce, echostr)) {
            throw new IllegalArgumentException("请求参数非法，请核实!");
        }
        // 切换小程序
        wxMaService = MiniAppUtils.switchover(appid);
        if (wxMaService.checkSignature(timestamp, nonce, signature)) {
            return echostr;
        }
        return "非法请求";
    }


    @PostMapping(produces = "application/xml; charset=UTF-8")
    public String post(@PathVariable String appid,
                       @RequestBody String requestBody,
                       @RequestParam(name = "msg_signature", required = false) String msgSignature,
                       @RequestParam(name = "signature", required = false) String signature,
                       @RequestParam(name = "encrypt_type", required = false) String encryptType,
                       @RequestParam("timestamp") String timestamp,
                       @RequestParam("nonce") String nonce) {
        logger.info("\n接收微信请求：[msg_signature=[{}], encrypt_type=[{}], signature=[{}]," + " timestamp=[{}], nonce=[{}], requestBody=[\n{}\n] ",
                msgSignature, encryptType, signature, timestamp, nonce, requestBody);
        wxMaService = MiniAppUtils.switchover(appid);

        final boolean isJson = Objects.equals(wxMaService.getWxMaConfig().getMsgDataFormat(), WxMaConstants.MsgDataFormat.JSON);

        // 明文传输的消息
        if (StringUtils.isBlank(encryptType)) {
            WxMaMessage inMessage;
            if (isJson) {
                inMessage = WxMaMessage.fromJson(requestBody);
            } else {//xml
                inMessage = WxMaMessage.fromXml(requestBody);
            }
            this.route(inMessage, appid);
            return "success";
        }
        // aes加密的消息
        if ("aes".equals(encryptType)) {
            WxMaMessage inMessage;
            if (isJson) {
                inMessage = WxMaMessage.fromEncryptedJson(requestBody, wxMaService.getWxMaConfig());
            } else {//xml
                inMessage = WxMaMessage.fromEncryptedXml(requestBody, wxMaService.getWxMaConfig(), timestamp, nonce, msgSignature);
            }
            this.route(inMessage, appid);
            return "success";
        }
        throw new RuntimeException("不可识别的加密类型：" + encryptType);
    }

    private void route(WxMaMessage message, String appid) {
        try {
            WxMaMessageRouter router = MiniAppUtils.getRouter(appid);
            router.route(message);
        } catch (Exception e) {
            this.logger.error(e.getMessage(), e);
        }
    }
}
